The intake-manifold runner flaps on the FSI/TSI engines fail and throw P2015 — one of the most common check-engine lights on the Mk5/Mk6 (and the shared 2.0T).
What it is: the plastic intake manifold has swirl/runner flaps on a shaft driven by a small motor and position sensor. The flap-lever pin wears out, so the sensor can no longer read the flap position → P2015 (intake runner position sensor).
Symptoms: a CEL with P2015, occasionally a slight low-end drivability niggle.
The fix:
- A repair kit (a new lever/pin — the "Dorman"-style fix) is far cheaper than a whole manifold and is the usual repair.
- If the flaps or shaft themselves are damaged, the manifold is replaced.
…